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http://opensource.atlassian.com/projects/roller/browse/ROL-1294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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linda skrocki updated ROL-1294:
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Fix Version/s: (was: 3.3)
4.0
> Task scheduling is inconsistent due to use of java.util.Timer
> -------------------------------------------------------------
>
> Key: ROL-1294
> URL:
> http://opensource.atlassian.com/projects/roller/browse/ROL-1294
> Project: Roller
> Issue Type: Bug
> Affects Versions: 3.1
> Reporter: linda skrocki
> Assignee: Allen Gilliland
> Fix For: 4.0
>
>
> Roller's ThreadManagerImpl class uses a java.util.Timer class to schedule and
> run all of it's periodic tasks, however, this approach is not well suited for
> Roller's specific tasks. As detailed in the javadoc for the java.util.Timer
> class, long running tasks can backup in a timer and cause the scheduling to
> get off track ...
> "Corresponding to each Timer object is a single background thread that is
> used to execute all of the timer's tasks, sequentially. Timer tasks should
> complete quickly. If a timer task takes excessive time to complete, it "hogs"
> the timer's task execution thread. This can, in turn, delay the execution of
> subsequent tasks, which may "bunch up" and execute in rapid succession when
> (and if) the offending task finally completes."
> To ensure more consistent behavior for the running of scheduled tasks we need
> to improve the implementation of the task scheduler in the ThreadManagerImpl.
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